We look at the division of 54567785 by 817 
The aim is to understand the frequency of 817 in 54567785.

Moving on to step 1:
When dividing 5 by 817, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 817

Moving on to step 2:
If we divide 54 by 817, we get 0 and a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 54 to get 54.
Take the next digit (5) from the dividend and append it to 54, then repeat: 545 / 817

Going ahead to step 3:
817 can be fit into 545 0 times, resulting in a remainder of 545.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 545 leaves us with 545.
Take the next digit (6) from the dividend and append it to 545, then repeat: 5456 / 817

Advancing to step 4:
If we divide 5456 by 817, we get 6 and a remainder of 554.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 4902 from 5456 leaves us with 554.
Bring next digit (7) of the dividend behind the 554 and repeat the process: 5547 / 817

Going ahead to step 5:
817 can be fit into 5547 6 times, resulting in a remainder of 645.
The next digit of our result is 6. 
Result so far: 66.0
If we subtract 4902 from 5547, we get 645.
Take the next digit (7) from the dividend and append it to 645, then repeat: 6457 / 817

On to step 6:
6457 divided by 817 is 7 with a remainder of 738.
Put 7 as the next digit of the answer. 
Result so far: 667.0
If we take 5719 away from 6457, we end up with 738.
Take the next digit (8) from the dividend and append it to 738, then repeat: 7388 / 817

On to step 7:
The number 817 fits into 7388 9 times, leaving a remainder of 35.
The number 9 becomes the next digit in our result. 
Result so far: 6679.0
Deduct 7353 from 7388 and we're left with 35.
Include the next digit (5) from the dividend after 35, then repeat: 355 / 817

Advancing to step 8:
817 can be fit into 355 0 times, resulting in a remainder of 355.
The number 0 becomes the next digit in our result. 
Result so far: 66790.0
If we take 0 away from 355, we end up with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Advancing to step 9:
817 goes into 3550 4 times with a remainder of 282.
The number 4 becomes the next digit in our result. 
Result so far: 66790.4
The remainder is 282 after subtracting 3268 from 3550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Going ahead to step 10:
The number 817 fits into 2820 3 times, leaving a remainder of 369.
Use 3 as the next digit of our solution. 
Result so far: 66790.43
If we subtract 2451 from 2820, we get 369.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3690, and continue the process.

Step 11:
3690 divided by 817 is 4 with a remainder of 422.
The next digit of our result is 4. 
Result so far: 66790.434
Deduct 3268 from 3690 and we're left with 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Advancing to step 12:
4220 divided by 817 is 5 with a remainder of 135.
Use 5 as the next digit of our solution. 
Result so far: 66790.4345
If we subtract 4085 from 4220, we get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 13:
817 can be fit into 1350 1 times, resulting in a remainder of 533.
The number 1 becomes the next digit in our result. 
Result so far: 66790.43451
The remainder is 533 after subtracting 817 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Going ahead to step 14:
When dividing 5330 by 817, we get 6 with a remainder of 428.
Use 6 as the next digit of our solution. 
Result so far: 66790.434516
If we take 4902 away from 5330, we end up with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

On to step 15:
When dividing 4280 by 817, we get 5 with a remainder of 195.
Put 5 as the next digit of the answer. 
Result so far: 66790.4345165
If we take 4085 away from 4280, we end up with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

On to step 16:
When dividing 1950 by 817, we get 2 with a remainder of 316.
Write down 2 as next digit of the result. 
Result so far: 66790.43451652
If we take 1634 away from 1950, we end up with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

After the division, we end up with 66790.43451652 and a remainder of 3.16e-07.